Chronic Wasting Disease hos vilt

Oppdatert 13.05.2026

Veterinærinstituttet overvåker skrantesjuke (chronic wasting disease – CWD) i de norske hjortedyrbestandene.

Overvåkingsprogrammet inkluderer prøver fra elg (Alcec alces), hjort (Cervus elaphus), rådyr (Capreolus capreolus), rein (Rangifer tarandus) og dåhjort (Dama dama).

Formålet med overvåkningsprogrammet er å dokumentere status av CWD hos hjortedyr.

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Prionsykdommen CWD er en sykdom i gruppen overførbare (transmissible) spongiforme encefalopatier (TSE), som forårsaker ødeleggelse av hjernevev med dødelig utfall hos pattedyr.

2025

A total of 11,612 samples of wild, semi-domesticated and captive Norwegian cervids were analysed in 2025. Of these, three moose (Alces alces) tested positive for CWD. All were old females culled in Folldal (20 years old), Tvedestrand (17 years old) and Selbu (16 years old) municipalities. The later case was a traffic injury.

The cases detected showed disease characteristics previously described for the species in previous reports, i.e. PrPSc was only detected in brain tissue, and no prions were detected in lymphoid tissues with diagnostic tests (ELISA and western blot). In the Nordic countries, CWD has shown sporadic appearance in moose and red deer, whilst in reindeer the disease has been contagious and with lymphoid detections in routine diagnostics.